Renamed the IR instruction, new UI button added

Core/MIPS/IR/IRFrontend.cpp

@@ -309,7 +309,7 @@ void IRFrontend::DoJit(u32 em_address, std::vector<IRInst> &instructions, u32 &m
 		instructions.reserve(block_instructions.capacity());
 		// The first instruction is "Downcount"
 		instructions.push_back(block_instructions.front());
-		instructions.push_back({ IROp::LogBlockHash, 0, 0, 0, 0 });
+		instructions.push_back({ IROp::LogIRBlock, 0, 0, 0, 0 });
 		std::copy(block_instructions.begin() + 1, block_instructions.end(), std::back_inserter(instructions));
 	}
 

Core/MIPS/IR/IRInst.h

@@ -238,7 +238,7 @@ enum class IROp : uint8_t {
 	ValidateAddress128,
 
 	// Tracing support.
-	LogBlockHash,
+	LogIRBlock,
 
 	Nop,
 	Bad,

Core/MIPS/IR/IRInterpreter.cpp

@@ -1237,7 +1237,7 @@ u32 IRInterpret(MIPSState *mips, const IRInst *inst) {
 				return mips->pc;
 			}
 			break;
-		case IROp::LogBlockHash:
+		case IROp::LogIRBlock:
 			if (mipsTracer.tracing_enabled) {
 				mipsTracer.executed_blocks.push_back(inst->constant);
 			}

Core/MIPS/MIPSTracer.cpp

@@ -117,18 +117,24 @@ void MIPSTracer::flush_block_to_file(TraceBlockInfo& block_info) {
 	for (; addr < end_addr; addr += 4, ++index) {
 		snprintf(buffer, sizeof(buffer), "0x%08x: ", addr);
 		MIPSDisAsm(storage[index], addr, buffer + prefix_size, sizeof(buffer) - prefix_size, true);
+
+		// TODO: check if removing the std::string makes this faster
 		output << std::string(buffer) << "\n";
 	}
 }
 
 void MIPSTracer::start_tracing() {
+	if (!tracing_enabled) {
+		INFO_LOG(Log::JIT, "MIPSTracer enabled");
+	}
 	tracing_enabled = true;
-	INFO_LOG(Log::JIT, "MIPSTracer enabled");
 }
 
 void MIPSTracer::stop_tracing() {
+	if (tracing_enabled) {
+		INFO_LOG(Log::JIT, "MIPSTracer disabled");
+	}
 	tracing_enabled = false;
-	INFO_LOG(Log::JIT, "MIPSTracer disabled");
 }
 
 void MIPSTracer::initialize(u32 storage_capacity, u32 max_trace_size) {

UI/GameSettingsScreen.cpp

@@ -1951,6 +1951,9 @@ void DeveloperToolsScreen::CreateViews() {
 #endif
 	});
 
+	Button *InvalidateJitCache = list->Add(new Button(dev->T("Clear the JIT cache")));
+	InvalidateJitCache->OnClick.Handle(this, &DeveloperToolsScreen::OnMIPSTracerClearJitCache);
+
 	Draw::DrawContext *draw = screenManager()->getDrawContext();
 
 	list->Add(new ItemHeader(dev->T("Ubershaders")));
@@ -2184,6 +2187,12 @@ UI::EventReturn DeveloperToolsScreen::OnMIPSTracerFlushTrace(UI::EventParams &e)
 	return UI::EVENT_DONE;
 }
 
+UI::EventReturn DeveloperToolsScreen::OnMIPSTracerClearJitCache(UI::EventParams &e) {
+	INFO_LOG(Log::JIT, "Ordered to clear the jit cache");
+	System_PostUIMessage(UIMessage::REQUEST_CLEAR_JIT);
+	return UI::EVENT_DONE;
+}
+
 void DeveloperToolsScreen::update() {
 	UIDialogScreenWithBackground::update();
 	allowDebugger_ = !WebServerStopped(WebServerFlags::DEBUGGER);

UI/GameSettingsScreen.h

@@ -153,6 +153,7 @@ private:
 	UI::EventReturn OnMIPSTracerEnabled(UI::EventParams &e);
 	UI::EventReturn OnMIPSTracerPathChanged(UI::EventParams &e);
 	UI::EventReturn OnMIPSTracerFlushTrace(UI::EventParams &e);
+	UI::EventReturn OnMIPSTracerClearJitCache(UI::EventParams &e);
 	UI::EventReturn OnGPUDriverTest(UI::EventParams &e);
 	UI::EventReturn OnFramedumpTest(UI::EventParams &e);
 	UI::EventReturn OnMemstickTest(UI::EventParams &e);